Một vật dao động trên trục Ox với phương trình x 10sin 2 t / 2 = π + π ( ) cm. Thời điểm vật đi qua vị trí có li độ 5 cm lần thứ 2 theo chiều dương kể từ lúc t = 0 là?

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.